JPH0256903A - Variable resistance device - Google Patents
Variable resistance deviceInfo
- Publication number
- JPH0256903A JPH0256903A JP63207287A JP20728788A JPH0256903A JP H0256903 A JPH0256903 A JP H0256903A JP 63207287 A JP63207287 A JP 63207287A JP 20728788 A JP20728788 A JP 20728788A JP H0256903 A JPH0256903 A JP H0256903A
- Authority
- JP
- Japan
- Prior art keywords
- presser
- electrodes
- conductive elastomer
- electrode
- conductive rubber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 80
- 239000000806 elastomer Substances 0.000 claims abstract description 32
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000007779 soft material Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 15
- 239000012777 electrically insulating material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/78—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites
- H01H13/785—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by the contacts or the contact sites characterised by the material of the contacts, e.g. conductive polymers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
- H01C10/106—Adjustable resistors adjustable by mechanical pressure or force on resistive material dispersed in an elastic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
- H01H1/029—Composite material comprising conducting material dispersed in an elastic support or binding material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2201/00—Contacts
- H01H2201/022—Material
- H01H2201/032—Conductive polymer; Rubber
- H01H2201/036—Variable resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Adjustable Resistors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、作用される力の大きさに応じて電気抵抗値を
変化する可変抵抗装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable resistance device that changes an electrical resistance value depending on the magnitude of applied force.
従来、力を作用されると電気抵抗値を変化する装置の代
表的なものとしては、感圧導電ゴム（ＰＣＲ）を用いた
装置があった。Conventionally, a device using pressure-sensitive conductive rubber (PCR) has been a typical device that changes the electrical resistance value when force is applied.
しかし、従来の感圧導電ゴムは、
（ａ）作用される力の変化に対する電気抵抗値の変化が
スムーズでない。However, in conventional pressure-sensitive conductive rubber, (a) the electrical resistance value does not change smoothly in response to changes in the applied force.
（ｂ）作用される力と電気抵抗値との関係が安定しない
。(b) The relationship between the applied force and the electrical resistance value is unstable.
という問題があった。There was a problem.
したがって、従来の感圧導電ゴムを用いた装置は、作用
される力の有無に応じてオン、オフ的な機能を果たさせ
ることができるのみで、アナログ的な機能を果させるこ
とはできなかった。Therefore, devices using conventional pressure-sensitive conductive rubber can only perform on/off functions depending on the presence or absence of applied force, but cannot perform analog functions. Ta.
本発明は、前記従来の問題を解決するためになされたも
ので、作用される力の大きさに応じて電気抵抗値を変化
する可変抵抗装置であって、力の変化に対する電気抵抗
値の変化がスムーズで、がつ力と電気抵抗値との関係が
安定しており、ヒシテリシスも小さく、しかも構造およ
び組み立てが簡単で、製造コストを安くすることができ
る可変抵抗装置を提供することを目的とする。The present invention has been made in order to solve the above-mentioned conventional problems, and is a variable resistance device that changes the electrical resistance value according to the magnitude of the applied force, and is a variable resistance device that changes the electrical resistance value in response to a change in the force. The purpose of the present invention is to provide a variable resistance device that is smooth, has a stable relationship between strain force and electrical resistance value, has low hysteresis, is simple in structure and assembly, and can reduce manufacturing costs. do.
本発明による可変抵抗装置は、対をなす電極と、これら
の電極に対向して設けられた押圧子と、前記電極と前記
押圧子との間に設けられた伸長型導電エラストマー（伸
びを与えられると該伸びの大きさに応じて電気抵抗値が
変化するエラストマー）とを有してなり、
前記押圧子が前記電極側に押されると、該押圧子が前記
導電エラストマーを押し、前記導電エラストマーのうち
の各電極に隣接している部分を各電極に押し付けるとと
もに前記導電エラストマーのうちの前記電極間の部分に
伸びを与えるようになっているものである。The variable resistance device according to the present invention includes a pair of electrodes, a presser provided opposite these electrodes, and an elongated conductive elastomer (stretchable) provided between the electrodes and the presser. and an elastomer whose electrical resistance value changes depending on the magnitude of the elongation), and when the presser is pressed toward the electrode, the presser presses the conductive elastomer, causing the conductive elastomer to The portion of the conductive elastomer adjacent to each electrode is pressed against each electrode, and the portion of the conductive elastomer between the electrodes is stretched.
本発明においては、押圧子が電極側に押されると、導電
エラストマーのうちの各電極に隣接している部分が各電
極に押し付けられ、電極と伸長型導電エラストマーとが
確実に電気的に接触される。In the present invention, when the pusher is pushed toward the electrode, the portion of the conductive elastomer adjacent to each electrode is pressed against each electrode, thereby ensuring electrical contact between the electrode and the elongated conductive elastomer. Ru.
また、導電エラストマーのうちの電極間の部分に、押圧
子に作用される力に応じた大きさの伸びが与えられるの
で、電極間の電気抵抗値は押圧子に作用される力に応じ
て変化する。In addition, the portion of the conductive elastomer between the electrodes is given an elongation that corresponds to the force applied to the presser, so the electrical resistance between the electrodes changes depending on the force applied to the presser. do.
以下、本発明を図面に示す実施例に基づいて説明する。 Hereinafter, the present invention will be explained based on embodiments shown in the drawings.
第１〜５図は本発明の第一実施例を示す。この実施例に
おいて、電気絶縁材料からなるケース１は一面を開口さ
れた箱状をなしており、このケース１の開口面には電気
絶縁材料からなる基板２が取り付けられている。前記基
板２には、互いに平行に配置された一対のコの字状の電
極３，４が、それらの両側の辺を基板２の内面側から外
面側へ貫通させた状態で固定されている。1 to 5 show a first embodiment of the invention. In this embodiment, a case 1 made of an electrically insulating material has a box shape with one side open, and a substrate 2 made of an electrically insulating material is attached to the open surface of the case 1. A pair of U-shaped electrodes 3 and 4 arranged parallel to each other are fixed to the substrate 2 with their opposite sides penetrating from the inner surface to the outer surface of the substrate 2.
前記ケース１には、電気絶縁材料からなる実質的に剛体
の押圧子５が、基板２に対して垂直方向に移動可能に嵌
合されており、この押圧子５に設けられた円柱状部５ａ
はケース１の基板２と反対側の面に設けられた押圧子突
出穴６からケース１の外部に突出するようになっている
。前記押圧子５のうちの基板２に対向する部分は、基板
２に対し実質的に平行をなす平面部５ｂと、この平面部
５ｂの中央部に設けられた球面状の凸部５ｃとからなり
、凸部５Ｃの頂点５ｄは平面部５ｂと同一高さとされて
いる。A substantially rigid presser 5 made of an electrically insulating material is fitted into the case 1 so as to be movable in a direction perpendicular to the substrate 2, and a cylindrical portion 5a provided on the presser 5
protrudes to the outside of the case 1 from a presser protrusion hole 6 provided on the surface of the case 1 opposite to the substrate 2. The portion of the presser 5 that faces the substrate 2 consists of a flat portion 5b substantially parallel to the substrate 2, and a spherical convex portion 5c provided at the center of the flat portion 5b. , the apex 5d of the convex portion 5C is at the same height as the flat portion 5b.
前記基板２と押圧子５との間にはシート状の伸長型導電
ゴム７が介装されている。この導電ゴム７は、伸びを与
えられるとその電気抵抗値が変化する特性を有しており
、第６図はこの伸長型導電ゴム７の伸び率と電気抵抗値
の変化との関係を示す特性図である（ただし、この図は
伸長型導電ゴム７を長さ５０．ｈｍ、幅５．０ｍｍ、厚
さ０．３ｍｍのシート状とした場合の特性である）。こ
の特性図から明らかなように、この伸長型導電ゴム７は
、伸びを全く与えない状態では電気抵抗が大きいが、伸
ばすにつれて抵抗が小さくなる特性を有している。A sheet-shaped elongated conductive rubber 7 is interposed between the substrate 2 and the presser 5. This conductive rubber 7 has a characteristic that its electric resistance value changes when it is stretched, and FIG. (However, this figure shows the characteristics when the elongated conductive rubber 7 is in the form of a sheet with a length of 50.hm, a width of 5.0 mm, and a thickness of 0.3 mm). As is clear from this characteristic diagram, the stretchable conductive rubber 7 has a characteristic that the electrical resistance is large when no stretching is applied, but the resistance decreases as it stretches.
そして、この伸長型導電ゴム７においては、伸び（力）
の変化に対する電気抵抗値の変化がスムーズであって、
かつ伸び（力）と電気抵抗値との関係が安定しており、
ヒステリシスも小さい。In this elongated conductive rubber 7, the elongation (force)
The change in electrical resistance value with respect to the change in is smooth,
And the relationship between elongation (force) and electrical resistance value is stable,
Hysteresis is also small.
なお、この伸長型導電ゴム７は、圧縮されたときも、そ
の電気抵抗値が変化するが、その場合にはヒステリシス
特性が大きくなる。Note that the electrical resistance value of the stretchable conductive rubber 7 also changes when it is compressed, but in that case, the hysteresis characteristic increases.
このような特性を有する伸長型導電ゴムは、例えば、特
願昭６２−２０３８５６号に開示されているように、カ
ーボンブラックおよびグラファイトを混合してなる導電
性シリコンゴムをあらかじめ架橋させ、しかる後に、こ
の導電性シリコンゴムと相溶性のあるシリコンオイルを
５〜５０％含浸することにより作成することができる。An elongated conductive rubber having such characteristics can be obtained by, for example, as disclosed in Japanese Patent Application No. 62-203856, conductive silicone rubber made by mixing carbon black and graphite is cross-linked in advance, and then, It can be created by impregnating 5 to 50% of silicone oil that is compatible with this conductive silicone rubber.
前記押圧子５に外力が作用されていないときは、導電ゴ
ム７のうちの電極３．４間の部分７ｃと基板２との間に
は空間８が形成されている。When no external force is applied to the presser 5, a space 8 is formed between the substrate 2 and the portion 7c of the conductive rubber 7 between the electrodes 3.4.
次に、本実施例の作動を説明する。Next, the operation of this embodiment will be explained.
第１図のように押圧子５に外力が作用されていない状態
では、導電ゴム７には伸びが与えられないので、導電ゴ
ム７は電気抵抗値が大きい状態となっている。When no external force is applied to the presser 5 as shown in FIG. 1, the conductive rubber 7 is not elongated, so the conductive rubber 7 has a large electrical resistance value.
他方、押圧子５のケース１外に突出している部分５ａを
指で押し、第２図のように押圧子５を電極３，４側に移
動すると、導電ゴム７のうちの電極３．４に隣接してい
る部分７ａ、７ｂが電極３゜４に押し付けられ、導電ゴ
ム７と電極３．４とが確実に電気的に接触される。また
、押圧子５の凸部５ｃが導電ゴム７のうちの電極３，４
間の部分７ｃを押して空間８側に変形させ、該部分７ｃ
に伸びを与え、電極３，４間における導電ゴム７の電気
抵抗値を低下させる。ここで、前記伸びの大きさは押圧
子５に作用される力に対応しているので、結局、押圧子
５に作用される力に応じて電極３．４間の電気抵抗値が
変化することになる。On the other hand, when the part 5a of the presser 5 protruding outside the case 1 is pressed with a finger and the presser 5 is moved toward the electrodes 3 and 4 as shown in FIG. Adjacent parts 7a, 7b are pressed against the electrodes 3.4 to ensure electrical contact between the conductive rubber 7 and the electrodes 3.4. Further, the convex portion 5c of the presser 5 is connected to the electrodes 3 and 4 of the conductive rubber 7.
Push the part 7c in between to deform it to the space 8 side, and
The electrical resistance value of the conductive rubber 7 between the electrodes 3 and 4 is lowered. Here, since the magnitude of the elongation corresponds to the force applied to the presser 5, the electrical resistance value between the electrodes 3 and 4 changes depending on the force applied to the presser 5. become.
また、押圧子５を押す力が解除されれば、導電ゴム７の
弾性によりこの可変抵抗装置は第１図の初期状態に戻る
。Furthermore, when the force pressing the presser 5 is released, the elasticity of the conductive rubber 7 causes the variable resistance device to return to the initial state shown in FIG.
この可変抵抗装置においては、伸長型導電ゴム７に与え
る伸びを変化することにより電気抵抗値を変化させるの
で、力の変化に対する電気抵抗値の変化がスムーズであ
って、かつ力と電気抵抗値との関係が安定している。In this variable resistance device, the electrical resistance value is changed by changing the elongation given to the elongated conductive rubber 7, so that the electrical resistance value changes smoothly in response to a change in force, and the force and electrical resistance value change smoothly. The relationship is stable.
また、前述のように、伸長型導電ゴム７は、圧縮された
ときもその電気抵抗値が変化するが、その場合にはヒス
テリシス特性が大きくなるという不都合が生じる。しか
るに、本発明においては、上述のように電極３，４間に
おける導電ゴム７の伸びによって電気抵抗値が変化する
ので、ヒステリシスを小さくすることができる。Further, as described above, the electrical resistance value of the stretchable conductive rubber 7 changes even when it is compressed, but in this case, there arises a disadvantage that the hysteresis characteristic increases. However, in the present invention, the electrical resistance value changes depending on the elongation of the conductive rubber 7 between the electrodes 3 and 4 as described above, so that the hysteresis can be reduced.
したがって、この可変抵抗装置によれば、その電気抵抗
値の変化を通じて、例えば、モータの回転数、光、或い
は音等の制御を精密に行うことが可能である。Therefore, according to this variable resistance device, it is possible to precisely control, for example, the rotational speed of the motor, light, sound, etc. by changing the electrical resistance value.
また、この可変抵抗装置においては、導電ゴム７を電極
３，４と押圧子５との間に介在させるだけでよく、導電
ゴム７を電極３．４に機械的に接続ないしは取り付ける
必要はないので、組み立てが簡単である。Furthermore, in this variable resistance device, it is only necessary to interpose the conductive rubber 7 between the electrodes 3, 4 and the presser 5, and there is no need to mechanically connect or attach the conductive rubber 7 to the electrodes 3.4. , easy to assemble.
また、押圧子５が押されたとき、導電ゴム７が押圧子５
と電極３，４との間にしっかりと挟持されるので、押圧
子５の凸部５ｃが導電ゴム７の電極３．４間の部分７ｃ
を押したとき、導電ゴム７が電極３，４間から滑り落ち
、空間８に落ち込んでしまうこともない。Also, when the presser 5 is pressed, the conductive rubber 7
and the electrodes 3 and 4, the convex portion 5c of the presser 5 touches the portion 7c of the conductive rubber 7 between the electrodes 3 and 4.
When pressed, the conductive rubber 7 does not slip from between the electrodes 3 and 4 and fall into the space 8.
なお、前記実施例では、押圧子５全体が電気絶縁材料か
ら構成されているが、電極３．４間の電気抵抗値の変化
に悪影響を与えない範囲で、押圧子５の一部を金属等の
電気導体としてもよい。In the above embodiment, the entire presser element 5 is made of an electrically insulating material, but a portion of the presser element 5 is made of metal or the like within a range that does not adversely affect the change in electrical resistance between the electrodes 3.4. It may also be used as an electrical conductor.
第７図および８図は本発明の第二実施例を示す。Figures 7 and 8 show a second embodiment of the invention.
この実施例においては、押圧子５と伸長型導電ゴム７と
の間にスポンジ、ポリウレタンフォーム等からなるシー
ト状の柔軟でかつ弾性を有する電気絶縁性の材料からな
る介装材１１が介装されている。そして、押圧子５のう
ちの介装材１１を介して伸長型導電ゴム７に対向する部
分は、全面的に、基板２に対し実質的に平行をなす平面
部５ｅとされており、前記第一実施例のような凸部５ｃ
は設けられていない。In this embodiment, an intervening material 11 made of a sheet-like flexible and elastic electrically insulating material made of sponge, polyurethane foam, etc. is interposed between the presser 5 and the stretchable conductive rubber 7. ing. The part of the presser 5 that faces the elongated conductive rubber 7 via the intervening material 11 is entirely a flat part 5e that is substantially parallel to the substrate 2. Convex portion 5c as in one embodiment
is not provided.
他の構成は前記実施例と同様である。The other configurations are the same as those in the previous embodiment.
次に、本実施例の作動を説明する。Next, the operation of this embodiment will be explained.
第７図のように押圧子５に外力が作用されていない状態
では、導電ゴム７には伸びが与えられないので、導電ゴ
ム７は電気抵抗値が大きい状態となっている。When no external force is applied to the presser 5 as shown in FIG. 7, the conductive rubber 7 is not stretched, so the conductive rubber 7 has a large electrical resistance value.
他方、押圧子５のケース１外に突出している部分５ａを
指で押し、第８図のように押圧子５を電極３，４側に移
動すると、介装材１１を介して導電ゴム７が押され、該
導電ゴム７のうちの電極３゜４に隣接している部分７ａ
、７ｂが電極３，４に押し付けられ、導電ゴム７と電極
３，４とが確実に電気的に接触される。On the other hand, when the part 5a of the pusher 5 protruding outside the case 1 is pressed with a finger and the pusher 5 is moved toward the electrodes 3 and 4 as shown in FIG. The pressed portion 7a of the conductive rubber 7 adjacent to the electrode 3.4
, 7b are pressed against the electrodes 3, 4 to ensure electrical contact between the conductive rubber 7 and the electrodes 3, 4.
また、このとき、介装材１１の電極３，４付近の部分が
電極３，４間（すなわち、横方向）にはみ出て、導電ゴ
ム７のうちの電極３，４間の部分７ｃを押して空間８側
に変形させ、該部分７ｃに伸びを与え、電極３，４間に
おける導電ゴム７の電気抵抗値を低下させる。この結果
、前記第一実施例と同様にして、押圧子５に作用される
力に応じて電極３．４間の電気抵抗値が変化する。Also, at this time, a portion of the intervening material 11 near the electrodes 3 and 4 protrudes between the electrodes 3 and 4 (that is, in the lateral direction), pushing the portion 7c of the conductive rubber 7 between the electrodes 3 and 4 and creating a space. 8 side to give elongation to the portion 7c and reduce the electrical resistance value of the conductive rubber 7 between the electrodes 3 and 4. As a result, the electrical resistance value between the electrodes 3 and 4 changes in accordance with the force applied to the presser 5, as in the first embodiment.
また、押圧子５を押す力が解除されれば、導電ゴム７お
よび介装材１１の弾性によりこの可変抵抗装置は第７図
の初期状態に戻る。Further, when the force pressing the presser 5 is released, the elasticity of the conductive rubber 7 and the intervening material 11 causes the variable resistance device to return to the initial state shown in FIG. 7.
第９図および１０図は本発明の第三実施例を示す。この
実施例においては、電気絶縁材料からなるケース１は長
尺状とされており、このケース１の一方の開口面には電
気絶縁材料からなる基板２が取り付けられている。前記
基板２には、互いに平行に配置された複数対のコの字状
の電極３□。Figures 9 and 10 show a third embodiment of the invention. In this embodiment, a case 1 made of an electrically insulating material is elongated, and a substrate 2 made of an electrically insulating material is attached to one opening surface of the case 1. The substrate 2 has a plurality of pairs of U-shaped electrodes 3□ arranged in parallel to each other.
３２、・・・３Ｎ、４．．４２．・・・４Ｎが、それら
の両側の辺を基板２の内面側から外面側へ貫通させた状
態で固定されている。32,...3N,4. ．． 42. . . 4N are fixed with their both sides penetrating from the inner surface to the outer surface of the substrate 2.
前記ケース１内において電極３□、３２．・・・３Ｎ”
１”２’ ・・・４Ｎ上には、長いシート状の伸長型導
電ゴム７が置かれている。この伸長型導電ゴム７上には
、スポンジ、ポリウレタンフォーム等からなる柔軟でか
つ弾性を有する電気絶縁性の材料からなる長いシート状
の押圧子５が置かれており、さらにこの押圧子５上には
軟質プラスチック等の柔軟でかつ弾性を有する材料から
なる長いシート然のカバー１３が置かれている。そして
、このカバー１３の大部分はケース１の基板２と反対側
の面に設けられた開口１２を介して外部に露出されてい
る。前記押圧子５に外力が作用されていないときは、導
電ゴム７のうちの電極３１゜３ ・・・３Ｎと４□、
４２．・・・４Ｎとの間の部分２ ′
と基板２との間には前記各実施例の場合の空間８と同様
の空間が形成されている。In the case 1, electrodes 3□, 32. ...3N”
1"2' ... 4N, a long sheet-shaped elongated conductive rubber 7 is placed. On this elongated conductive rubber 7, a flexible and elastic material made of sponge, polyurethane foam, etc. A long sheet-like presser 5 made of an electrically insulating material is placed, and a long sheet-like cover 13 made of a flexible and elastic material such as soft plastic is placed on top of the presser 5. Most of this cover 13 is exposed to the outside through an opening 12 provided on the surface of the case 1 opposite to the substrate 2.When no external force is applied to the presser 5, are the electrodes 31°3...3N and 4□ of the conductive rubber 7,
42. . . 4N and the substrate 2, a space similar to the space 8 in each of the embodiments described above is formed.
本実施例においては、カバー１３を介して押圧子５の一
部を指で押圧すると、該部分が導電ゴム７のうちの対応
する部分を押し、電極３□、３゜。In this embodiment, when a part of the presser 5 is pressed with a finger through the cover 13, this part pushes the corresponding part of the conductive rubber 7, and the electrode 3□, 3° is pressed.
・・・３Ｎと４□、４□、・・・４Ｎのうちの対応する
対に導電ゴム７を押し付けるとともに該対応する対の電
極間の導電ゴム７に伸びを与える。これにより、前記対
応する対の電極間の電気抵抗値が指の押す力に対応する
分だけ低下する。. . 3N and 4□, 4□, . . . 4N. The conductive rubber 7 is pressed against the corresponding pairs of electrodes, and the conductive rubber 7 is stretched between the corresponding pairs of electrodes. As a result, the electrical resistance value between the corresponding pairs of electrodes is reduced by an amount corresponding to the pressing force of the finger.
なお、本実施例においては、カバー１３は必ずしも設け
なくてもよい。Note that in this embodiment, the cover 13 does not necessarily need to be provided.
第１１図は本発明の第四実施例を示す。本実施例におい
ては、前記第９図および１０図の第三実施例と異なり、
電極は複数対設けられておらず、導電ゴム７のほぼ全長
に隣接する一対の電極３゜４のみが設けられている。他
の構成は前記第三実施例と同様である。FIG. 11 shows a fourth embodiment of the invention. In this embodiment, unlike the third embodiment shown in FIGS. 9 and 10,
A plurality of pairs of electrodes are not provided, but only a pair of electrodes 3.4 adjacent to each other along substantially the entire length of the conductive rubber 7 is provided. The other configurations are the same as those of the third embodiment.
本実施例においては、長さ方向に関して押圧子５のどの
部分を指で押圧しても、一対の電極３゜４間の電気抵抗
値が指の押す力に対応する分だけ低下する。In this embodiment, no matter which part of the presser 5 is pressed with a finger in the length direction, the electrical resistance value between the pair of electrodes 3 and 4 is reduced by an amount corresponding to the pressing force of the finger.
なお、前記各実施例では、伸長型導電エラストマーとし
て伸長型導電ゴムを用いた例を示したが、本発明におい
ては、ゴム以外の伸長型導電性エラストマーを使用して
もよい。In each of the above embodiments, an example in which an elongated conductive rubber was used as the elongated conductive elastomer was shown, but in the present invention, an elongated conductive elastomer other than rubber may be used.
また、本発明において使用できる伸長型導電ゴムの成分
および製法は、前記特願昭６２−１７３８５６号に開示
されたものに限られない。Furthermore, the components and manufacturing method of the elongated conductive rubber that can be used in the present invention are not limited to those disclosed in Japanese Patent Application No. 173856/1982.
さらに、前記各実施例では、押圧子５を直接押すように
しているが、本発明においては、レバー等の他の部材を
介して押圧子を操作する構成としてもよい。Further, in each of the embodiments described above, the pusher 5 is pressed directly, but in the present invention, the pusher may be operated via another member such as a lever.
以上のように本発明による可変抵抗装置は、作用される
力の大きさに応じて電気抵抗値を変化する可変抵抗装置
であって、
（イ）力の変化に対する電気抵抗値の変化がスムーズで
あって、かつ力と電気抵抗値との関係が安定している。As described above, the variable resistance device according to the present invention is a variable resistance device that changes the electrical resistance value according to the magnitude of the applied force, and (a) the electrical resistance value changes smoothly in response to changes in the force. , and the relationship between force and electrical resistance value is stable.
（ロ）ヒシテリシスが小さい。(b) Hysteresis is small.
（ハ）構造および組み立てが簡単で、製造コストを安く
することができる。(c) The structure and assembly are simple, and manufacturing costs can be reduced.
等の優れた効果を得られるものである。It is possible to obtain excellent effects such as.
第１図は本発明による可変抵抗装置の第一実施例を、押
圧子が押されていない状態において示す断面図、第２図
は該実施例を、押圧子が押されている状態において示す
断面図、第３図は第１図の■−■線における断面図、第
４図は第１図のＩＶ−■線における断面図、第５図は該
実施例を示す平面図、第６図は該実施例に用いられた伸
長型導電ゴムの伸び率と電気抵抗の変化との関係を示す
特性図、第７図は本発明による可変抵抗装置の第二実施
例を、押圧子が押されていない状態において示す断面図
、第８図は該実施例を、押圧子が押されている状態にお
いて示す断面図、第９図は本発明による可変抵抗装置の
第三実施例を示す平面図、第１０図は第９図のＸ−Ｘ線
における断面図、第１１図は本発明による可変抵抗装置
の第四実施例を示す平面図である。
３．４・・・電極、５・・・押圧子、５ｃ・・・凸部、
７・・・伸長型導電ゴム、８・・・空間。
第１図
第２図
５日
第３図
第５図
第４図
Ω
第６図
１゜
３゜
・４０
イ申び率
第７図
第８図
４Ｉ
第１０図
１よ
４＠−２
第１１図FIG. 1 is a sectional view showing a first embodiment of the variable resistance device according to the present invention in a state in which the pusher is not pressed, and FIG. 2 is a sectional view showing the embodiment in a state in which the pusher is pressed. 3 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 4 is a sectional view taken along the line IV--■ in FIG. 1, FIG. 5 is a plan view showing the embodiment, and FIG. FIG. 7 is a characteristic diagram showing the relationship between the elongation rate of the elongated conductive rubber used in this example and the change in electrical resistance. FIG. 8 is a sectional view showing this embodiment in a state where the presser is not pressed; FIG. 9 is a plan view showing a third embodiment of the variable resistance device according to the present invention; FIG. 10 is a sectional view taken along line X--X in FIG. 9, and FIG. 11 is a plan view showing a fourth embodiment of the variable resistance device according to the present invention. 3.4... Electrode, 5... Presser, 5c... Convex part,
7...Stretchable conductive rubber, 8...Space. Fig. 1 Fig. 2 5th Fig. 3 Fig. 5 Fig. 4 Ω Fig. 6 1゜3゜・40 I offer rate Fig. 7 Fig. 8 Fig. 4I Fig. 10 1-4@-2 Fig. 11
Claims (4)
た押圧子と、前記電極と前記押圧子との間に設けられた
伸長型導電エラストマー（伸びを与えられると該伸びの
大きさに応じて電気抵抗値が変化するエラストマー）と
を有してなり、前記押圧子が前記電極側に押されると、
該押圧子が前記導電エラストマーを押し、前記導電エラ
ストマーのうちの各電極に隣接している部分を各電極に
押し付けるとともに前記導電エラストマーのうちの前記
電極間の部分に伸びを与えるようになっていることを特
徴とする可変抵抗装置。1. A pair of electrodes, a presser provided facing these electrodes, and an elongated conductive elastomer provided between the electrode and the presser (when elongated, the elongated conductive elastomer (an elastomer whose electrical resistance value changes), and when the presser is pressed toward the electrode side,
The presser presses the conductive elastomer, pressing a portion of the conductive elastomer adjacent to each electrode against each electrode, and giving elongation to a portion of the conductive elastomer between the electrodes. A variable resistance device characterized by:
記押圧子と反対側において、前記導電エラストマーのう
ちの前記電極間の部分に隣接して空間が形成されており
、 前記押圧子には、該押圧子が前記電極側に押され、該押
圧子が前記導電エラストマーのうちの各電極に隣接して
いる部分を各電極に押し付けたとき、前記導電エラスト
マーのうちの前記電極間の部分を前記空間側に変形させ
る凸部を設けられている請求項１記載の可変抵抗装置。2. The presser is substantially rigid, and when the presser is not pressed toward the electrode, a space is formed adjacent to a portion of the conductive elastomer between the electrodes on the opposite side of the presser. The presser is configured such that when the presser is pressed toward the electrode and the presser presses a portion of the conductive elastomer adjacent to each electrode onto each electrode, the conductive elastomer 2. The variable resistance device according to claim 1, further comprising a convex portion that deforms a portion of the elastomer between the electrodes toward the space.
で弾性を有する介装材が設けられており、前記押圧子が
前記電極側に押されていないときには、前記押圧子と反
対側において、前記導電エラストマーのうちの前記電極
間の部分に隣接して空間が形成されている請求項１記載
の可変抵抗装置。3. The presser is substantially rigid, and a flexible and elastic intervening material is provided between the presser and the elongated conductive elastomer, and the presser is not pressed toward the electrode. 2. The variable resistance device according to claim 1, wherein a space is sometimes formed adjacent to a portion of the conductive elastomer between the electrodes on a side opposite to the presser.
記押圧子と反対側において、前記導電エラストマーのう
ちの前記対をなす電極間の部分に隣接して空間が形成さ
れており、 前記押圧子の一部が押圧されると、該部分が前記導電エ
ラストマーの対応する部分を押し、前記導電エラストマ
ーのうちの前記電極に隣接している部分の一部を前記電
極に押し付けるとともに前記導電エラストマーうちの前
記電極間の部分の一部に伸びを与えるようになっている
請求項１記載の可変抵抗装置。4. The presser is made of a soft and elastic material, and when the presser is not pressed toward the electrode, a portion of the conductive elastomer between the pair of electrodes is formed on the side opposite to the presser. A space is formed adjacently, and when a part of the presser is pressed, the part pushes a corresponding part of the conductive elastomer, and the part of the conductive elastomer adjacent to the electrode is pressed. 2. The variable resistance device according to claim 1, wherein a portion of the conductive elastomer is pressed against the electrodes and a portion of the conductive elastomer between the electrodes is stretched.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207287A JPH0256903A (en) | 1988-08-23 | 1988-08-23 | Variable resistance device |
| EP90103047A EP0442015A1 (en) | 1988-08-23 | 1990-02-16 | Variable resistor utilizing extension type conductive rubber |
| US07/488,133 US5162775A (en) | 1988-08-23 | 1990-03-05 | Variable resistor utilizing extension type conductive rubber |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207287A JPH0256903A (en) | 1988-08-23 | 1988-08-23 | Variable resistance device |
| US07/488,133 US5162775A (en) | 1988-08-23 | 1990-03-05 | Variable resistor utilizing extension type conductive rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0256903A true JPH0256903A (en) | 1990-02-26 |
Family
ID=26516161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63207287A Pending JPH0256903A (en) | 1988-08-23 | 1988-08-23 | Variable resistance device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5162775A (en) |
| EP (1) | EP0442015A1 (en) |
| JP (1) | JPH0256903A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004491A1 (en) * | 1991-08-20 | 1993-03-04 | Key Tronic Corporation. Inc. | Single station cursor device suitable for keyboards |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0582732A1 (en) * | 1992-08-11 | 1994-02-16 | LEDA Logarithmic Electrical Devices for Automation S.r.l. | Limit switch |
| AU6627394A (en) * | 1993-04-28 | 1994-11-21 | Mark Mitchnick | Conductive polymers |
| US5441726A (en) * | 1993-04-28 | 1995-08-15 | Sunsmart, Inc. | Topical ultra-violet radiation protectants |
| US5391432A (en) * | 1993-04-28 | 1995-02-21 | Mitchnick; Mark | Antistatic fibers |
| US5376913A (en) * | 1993-07-12 | 1994-12-27 | Motorola, Inc. | Variable resistor utilizing an elastomeric actuator |
| US5625333A (en) * | 1995-09-22 | 1997-04-29 | Morton International, Inc. | Bend sensor horn switch assembly |
| US6016097A (en) * | 1997-08-29 | 2000-01-18 | Eaton Corporation | Motion transducer |
| US6184866B1 (en) | 1997-09-29 | 2001-02-06 | Varatouch Technology Incorporated | Pointing device |
| US6313826B1 (en) | 1998-04-07 | 2001-11-06 | Varatouch Technology Incorporated | Pointing device with non-spring return mechanism |
| US6404323B1 (en) | 1999-05-25 | 2002-06-11 | Varatouch Technology Incorporated | Variable resistance devices and methods |
| US7190251B2 (en) * | 1999-05-25 | 2007-03-13 | Varatouch Technology Incorporated | Variable resistance devices and methods |
| JP2000353604A (en) * | 1999-06-10 | 2000-12-19 | Alps Electric Co Ltd | Variable resistor |
| EP1267729A2 (en) * | 2000-03-23 | 2003-01-02 | SciMed Life Systems, Inc. | Pressure sensor for therapeutic delivery device and method |
| KR100417283B1 (en) * | 2002-05-15 | 2004-02-05 | 김병만 | Device for self-feeding lubricating oil |
| US7474772B2 (en) | 2003-06-25 | 2009-01-06 | Atrua Technologies, Inc. | System and method for a miniature user input device |
| US7587072B2 (en) | 2003-08-22 | 2009-09-08 | Authentec, Inc. | System for and method of generating rotational inputs |
| WO2007097979A2 (en) * | 2006-02-10 | 2007-08-30 | Atrua Technologies, Inc. | Systems using variable resistance zones and stops for generating inputs to an electronic device |
| US9235274B1 (en) | 2006-07-25 | 2016-01-12 | Apple Inc. | Low-profile or ultra-thin navigation pointing or haptic feedback device |
| US7784974B2 (en) * | 2006-10-31 | 2010-08-31 | Walter Baechtiger | Devices and methods for providing adjustable light intensity |
| DE112007003554A5 (en) * | 2007-04-20 | 2010-04-08 | Siemens Aktiengesellschaft | Switching element and / or control element |
| ES2405550T3 (en) * | 2009-02-04 | 2013-05-31 | Stryker Leibinger Gmbh & Co. Kg | Surgical power tool, operating procedure and corresponding drive construction group |
| ES2398006T3 (en) * | 2009-02-04 | 2013-03-13 | Stryker Leibinger Gmbh & Co. Kg | Electric surgical tool and drive assembly for it |
| US8421890B2 (en) | 2010-01-15 | 2013-04-16 | Picofield Technologies, Inc. | Electronic imager using an impedance sensor grid array and method of making |
| US8866347B2 (en) | 2010-01-15 | 2014-10-21 | Idex Asa | Biometric image sensing |
| US8791792B2 (en) | 2010-01-15 | 2014-07-29 | Idex Asa | Electronic imager using an impedance sensor grid array mounted on or about a switch and method of making |
| JP5826192B2 (en) | 2010-02-24 | 2015-12-02 | オークランド・ユニサービシス・リミテッド | Electrical component and circuit comprising said component |
| GB201111340D0 (en) * | 2011-07-04 | 2011-08-17 | Meso Ltd | Load measuring system |
| CN109407862B (en) | 2012-04-10 | 2022-03-11 | 傲迪司威生物识别公司 | Biometric sensing |
| TWI627381B (en) * | 2016-10-21 | 2018-06-21 | 台灣艾華電子工業股份有限公司 | Bend sensor |
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| JPS55104036A (en) * | 1979-02-02 | 1980-08-09 | Shinetsu Polymer Co | Signal generator |
| US4281013A (en) * | 1979-02-13 | 1981-07-28 | The Upjohn Company | Antiatherosclerotic use of khellin and khellinin |
| DE3006678A1 (en) * | 1980-02-22 | 1981-08-27 | G. Kromschröder AG, 4500 Osnabrück | Sponge compressed to electrically conducting state - has conducting material in sponge pores and conducts when compressed, enabling use as switch pads in valve gear |
| DE3039256A1 (en) * | 1980-10-17 | 1982-04-29 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | RESISTANT VARIABLE SWITCHGEAR |
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| JPS60136022U (en) * | 1984-02-20 | 1985-09-10 | アルプス電気株式会社 | push button switch |
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| SE459827B (en) * | 1987-11-20 | 1989-08-07 | Labino Patent Ab | PRESSURE SENSITIVE POTENTIOMETERS |
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-
1988
- 1988-08-23 JP JP63207287A patent/JPH0256903A/en active Pending
-
1990
- 1990-02-16 EP EP90103047A patent/EP0442015A1/en not_active Ceased
- 1990-03-05 US US07/488,133 patent/US5162775A/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004491A1 (en) * | 1991-08-20 | 1993-03-04 | Key Tronic Corporation. Inc. | Single station cursor device suitable for keyboards |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0442015A1 (en) | 1991-08-21 |
| US5162775A (en) | 1992-11-10 |
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